Nebula
Sh2-76
H II region
A cloud of ionised hydrogen (H II region): a stellar nursery glowing in the ultraviolet light of the young, hot O and B stars inside it. The distance follows from the gas’s radial velocity and the Galaxy’s rotation curve (kinematic method).
| Type | Nebula |
|---|---|
| Constellation | Aquila |
| Distance | 713 pc (2.3 thousand ly) · estimated |
| Diameter | 24.5 ly |
| WISE name | G040.554+02.443 |
| Catalogue status | Member of a known group of H II regions |
| Source | WISE H II Catalog v3.0 |
| Right ascension (J2000) | 18h 56m 38.4s |
| Declination (J2000) | +7° 53′ 48″ |
In the sky
Visible from the whole Northern Hemisphere and south to latitude 82° S. It stands highest at midnight in July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around 301 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 41 million years.